ALI, Banaz J; IBRAHIM, Leka’a M; MAJID, Ali Y. Periodontal health status of heavy and light smokers and its correlation with salivary superoxide dismutase enzyme (A comparative study) . Journal of Baghdad College of Dentistry, [S. l.], v. 25, n. 3, p. 97–102, 2013. Disponível em: https://www.jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/265. Acesso em: 1 may. 2025.